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(3x+9) (7x+5)

21x^2 + 78x + 45

Answered by Caitlin A. • Maths tutor

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Solve the following quadratic equation.

solve this simultaneous equation: 2x + 3y = 19 (Eq1) and 3x + y = 11 (Eq2)

Solve these simultaneous equations: 3y + x = 18 and x - 4y = -10.

Solve: 2((x)^2) + 7x + 3, for x

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